SAFETY PRECAUTIONS
Supply
Product
Certification
R
LISTED
100 to 240V AC, -15%
+12%, 50/60Hz, (±5%)
MFM383A /
MFM383A-C
MFM383A-C-CE 100 to 240V AC, -15%
+12%, 50/60Hz, (±5%)
Installation Category III
96 x 96
SPECIFICATIONS
DISPLAY
Liquid crystal display with backlight
3 lines, 4 digits per line to show electrical Parameters
Dedicated 7½ digit show energy
WIRING INPUT
3 Ø - 4 wire, 3 Ø - 3 wire, 2 Ø - 3 wire and
1 Ø - 2 wire system
RATED INPUT VOLTAGE
11 to 300V AC (L-N) ; 19 to 519V AC (L-L) ;
Installation Category III (600V)
UL Approval :
RS485 and MODBUS RTU
Communication
address
1 to 255
Transmission mode
Half duplex
Data types
Float and Integer
Transmission distance
500m maximum
Transmission Speed
300, 600,1200, 2400, 4800,
9600,19200 (in bps)
Parity
None, Odd, Even
Stop bits
1 or 2
Voltage VL-N
Accuracy
±0.5% of Full scale
Voltage VL-L
±0.5% of Full scale
Current
±0.5% of Full scale
Frequency
±0.1%
For L-N Voltage >20V,
For L-L Voltage >35V
Active Power
1%
Reactive Power
1%
Power Factor
±0.01
Active Energy
Class 1
Reactive Energy
Class 1
Apparent Energy
Class 1
WARNING :
1. To prevent the risk of electric shock, power supply to the
equipment must be kept OFF while doing the wiring
arrangement.
2. Wiring shall be done strictly according to the terminal
layout. Confirm that all connections are correct.
3. Use lugged terminals.
4. To reduce electromagnetic interference use of wires
with adequate ratings and twists of the same in equal
size shall be made with shortest connections.
5. Layout of connecting cables shall be away from any
internal EMI source.
6. Cable used for connection to power source, must have a
cross section of 0.5mm2 to 2.5mm2 ( 20 to 14AWG ; 750C
(minimum)).Thesewires shall have current carrying
capacity of 6A.
7. Copper cable should be used ( Stranded or Single core
cable ).
8. Before attempting work on device, ensure absence of
voltages using appropriate voltage detection device.
INSTALLATION GUIDELINES
1%
Apparent power
1. Read complete instructions prior to installation and
operation of the unit.
2. Risk of electric shock.
3. The equipment in its installed state must not come in
close proximity to any heating sources, oils, steam,
caustic vapors or other unwanted process by products.
OUTLINE
Dimensions (in mm)
WIRING GUIDELINES
ACCURACY :
Measurement
CAUTION :
RESOLUTION :
PT Ratio x CT Ratio
kWh
Pulse
<150
0.1K
0.1K
150
1K
1K
NOTE : 1) For Voltage, Current and Power, resolution is
automatically adjusted
2) For power factor, resolution is 0.001
CAUTION :
1. This equipment, being built-in-type, normally becomes
a part of main control panel and in such case the
terminals do not remain accessible to the end user after
installation and internal wiring.
2. Conductors must not come in contact with the internal
circuitry of the equipment or else it may lead to a safety
hazard that may in turn endanger life or cause electrical
shock to the operator.
3. Circuit breaker or mains switch must be installed
between power source and supply terminals to facilitate
power 'ON' or ‘OFF’ function. However this switch or
breaker must be installed in a convenient position
normally accessible to the operator.
4. Before disconnecting the secondary of the external
current transformer from the equipment, make sure that
the current transformer is short circuited to avoid risk of
electrical shock and injury.
5. The equipment shall not be installed in environmental
conditions other than those mentioned in this manual.
6. The equipment does not have a built-in-type fuse.
Installation of external fuse of rating 275V AC / 0.5Amp
for electrical circuitry / battery is highly recommended.
PANEL CUTOUT
Dimensions (in mm)
99
91.5
50
5
MAINTENANCE
1. The equipment should be cleaned regularly to avoid
blockage of ventilating parts.
2. Clean the equipment with a clean dry or damp cloth.
Do not use any cleaning agent other than water.
TERMINAL CONNECTIONS
MFM383A / MFM383A-C
L
+
ENVIRONMENTAL CONDITIONS
- Indoor use
- Altitude of up to 2000 meters
- Pollution degree II
Temperature : Operating : -10 to 55OC
Storage : -20 to 75OC
Humidity
: Up to 85% RH, non-condensing
PROTECTION CLASS : II
MOUNTING
Panel mounting
WEIGHT
MFM383A : 310gms ; MFM383A-C : 344gms
OUTPUT
Pulse Output : Voltage range : External 24V DC max.
Current capacity : 100mA max.
Pulse Width : 100ms ±5ms.
Interface standard
and protocol
For installing the meter
1. Prepare the panel cutout with proper dimensions as shown
below.
2. Push the meter into the panel cutout. Secure the meter in
its place by fitting the clamp on the rear side. Fit clamps on
both sides in diagonally opposite location for optimum
fitting.
3. For proper sealing, tighten the screws evenly with required
torque.
Terminal screw tightening torque :
0.68 N-m to 0.79 N-m ( 6.018 In-Lb to 6.992 In-Lb )
Screw clamp tightening torque : 0.1N-m (0.885 Lb-inch)
+
11 to 277V AC (L-N) ; 19 to 480V AC (L-L) ;
Installation Category III (300V L-N)
FREQUENCY RANGE
45-65Hz
RATED INPUT CURRENT
Nominal 5A AC (Min-11mA, Max-6A)
BURDEN
0.5 VA@5A per phase
CT PRIMARY
1A / 5A to 10,000A(Programmable for any Value)
Note : 1A to 10,000A if CT secondary is 1 else
CT primary is 5A to 10,000A
CT SECONDARY
1A or 5A (programmable)
PT PRIMARY
100V to 10,000V (Programmable for any value)
PT SECONDARY
100 to 500V AC (L-L)(Programmable for any value)
DISPLAY UPDATE TIME
1sec. for all parameters
DISPLAY SCROLLING
Automatic or Manual (Programmable)
POWER CONSUMPTION
MFM383A / MFM383A-C : Less than 8VA
SERIAL COMMUNICATION [ Applicable for MFM383A-C ]
All safety related codifications, symbols and
instructions that appear in this operating manual or on
the equipment must be strictly followed to ensure the
safety of the operating personnel as well as the
instrument.
If the equipment is not used in a manner specified by
the manufacturer it might impair the protection provided
by the equipment.
Do not use the equipment if there is any mechanical
damage.
Ensure that the equipment is supplied with correct
voltage.
MECHANICAL INSTALLATION
91.5
ORDER CODE INFORMATION
90.5
OP623-V01
Operating Instructions
99
MFM383A SERIES
N
selec
PULSE O/P
RS485
Valid for
communication
model only
CONNECTIONS DIAGRAM
L1
L
O
L2
L3
A
N
D
S1
S2
I1
S1
S2
I2
S1
S2
N
V1
V2
V3
I3
Doc. name : OP INST MFM383A SERIES
OP623-V01(Page 1 of 4)
KEY
PRESS
Config
page.
ONLINE PAGE DESCRIPTION
Press The 11th screen : (Page 19) Displays total
“P” active power, reactive power and power factor of
3 phases.
The 12th screen : (Page 20) Displays total
active power, apparent power and power factor
of 3 phases.
There are 3 dedicated keys labelled as VI, VAF, P.
Use these 3 keys to read meter parameters. Simply press
these keys to read the parameters.
Press The 1st screen : (Page 9) Displays power factor
“P” of 3 phase.
The 2nd screen : (Page 10) Displays active
power of 3 phase.
The 3rd screen : (Page 11) Displays reactive
power of 3 phase.
The 4th screen : (Page 12) Displays apparent
power of 3 phase.
The 5th screen : (Page 13) Displays active
power, reactive power and power factor of 1st
phase.
The 6th screen : (Page 14) Displays active
power, apparent power and power factor of 1st
phase.
The 7th screen : (Page 15) Displays active
power, reactive power and power factor of 2nd
phase.
The 8th screen : (Page 16) Displays active
power, apparent power and power factor of 2nd
phase.
The 9th screen : (Page 17) Displays active
power, reactive power and power factor of 3rd
phase.
The 10th screen : (Page 18) Displays active
power, apparent power and power factor of 3rd
phase.
Slave Id
Active
Network selection
in configuration mode
Wiring
1 to 255
1
3P4W
3P4W, 2P3W, 1P2W
9600
3P3W
3P3W
Baud Rate
*10
Parity
None, Even, Odd None
*11
Stop Bit
1 or 2
1
12
Back Light
0 to 7200 sec.
0000
13
Max Page
1 to 20
20
14
Change Sequence
No / Yes
No
14.01
Page Sequence 1
1 to 20
1
14.02
Page Sequence 2
1 to 20
2
14.03
Page Sequence 3
1 to 20
3
14.04
Page Sequence 4
1 to 20
4
14.05
Page Sequence 5
1 to 20
5
14.06
Page Sequence 6
1 to 20
6
14.07
Page Sequence 7
1 to 20
7
14.08
Page Sequence 8
1 to 20
8
14.09
Page Sequence 9
1 to 20
9
SERIAL NUMBER DESCRIPTION
14.10
Page Sequence 10
1 to 20
10
Press 4th key ( ) for 10sec. to display 8 digit serial
number on first and second row.
14.11
Page Sequence 11
1 to 20
11
14.12
Page Sequence 12
1 to 20
12
Press The 1st screen : Displays active energy of
“E” three phase.
The 2nd screen : Displays reactive energy of
three phase.
The 3rd screen : Displays apparent energy of
three phase.
Note : 1) Only 1st screen will be displays of active
energy when active select in configuration.
2) Energy parameter and Energy reading toggle
automatically at the rate of 2 sec when select all
in energy selection in configuration.
AUTOMATIC / MANUAL MODE DESCRIPTION
Press ( ) key 3 sec. to toggle between Automatic and
Manual mode.
Note : By default unit operates in automatic mode.
In automatic mode online pages scroll automatically at
the rate of 5 sec. per page.
In automatic mode when any key is pressed, unit
temporarily switches to manual mode and the
appropriate page is displayed, also if any key is not
pressed for 5sec., unit resumes automatic mode.
*
CONFIGURATION
APPLICATION OF PULSE OUTPUT
PROCESS INTEGRATION
24V DC
maximum
+
P
L
C
#
Valid for communication model only
+
L
+
+
PULSE
O/P
RS485
MFM383A / MFM383A-C
I1
S1
I3
I2
S2
S1
S2
S1
S2
N
V1
V2
V3
Pulse output from MFM383A meter can be interfaced
into a process through a PLC for on line control of
energy content in the process.
If the PLC has a self excited digital input, external DC
supply is not needed.
The kWh pulse is also used to derive average kWh
information at the PLC.
Page Sequence 13
14.13
1 to 20
13
ENERGY CONTROLLER
There are 4 dedicated keys with symbols marked as
12 / 24V DC
Page Sequence 14
14.14
1 to 20
14
+
, , , . Use these 4 keys to enter into
To
configuration menu / change setting.
Page Sequence 15
14.15
1 to 20
15
Control
Note : The settings should be done by a professional,
Circuit
+
Page Sequence 16
14.16
1 to 20
16
after going through this users manual and after having
#
understood the application situation.
Page Sequence 17
14.17
1 to 20
17
Valid for communication model only
For the configuration setting mode :
+
!
Use ( ) and ( ) keys for 3sec. to enter or exit from
Page Sequence 18
14.18
18
1 to 20
configuration menu.
Page Sequence 19
+
+
14.19
19
1 to 20
L
Use ( ) and ( ) keys for increasing and decreasing
PULSE
RS485
O/P
parameters value respectively.
Page Sequence 20
14.20
1 to 20
20
!
Use ( ) key to go back to previous page.
Use ( ) key to save the setting and move on next
Factory Default
No
15
No / Yes
MFM383A / MFM383A-C
page.
O/P
COUNTER
I/P
Press The 1st screen : (Page 4) Displays voltage,
“VAF” current of 1st phase and frequency.
The 2nd screen : (Page 5) Displays voltage,
current of 2nd phase and frequency.
The 3rd screen : (Page 6) Displays voltage,
current of 3rd phase and frequency.
The 4th screen : (Page 7) Displays average
value of line to neutral voltage, current of three
phases and frequency.
The 5th screen : (Page 8) Displays average
value line to line voltage, current and Power
factor of three phases.
Note : For 3 Ø 3 W system, only the 1st, 2nd, 3rd
and 5th screen available.
For 3 Ø - 4 W : Display Line to Neutral Voltage
For 3 Ø - 3 W : Display Line to Line Voltage
*8
Active / All
9
ONLINE PAGE DESCRIPTION
Press The 1st screen : (Page 1) Displays line to neutral
“VI” voltage of 3 phases.
The 2nd screen : (Page 2) Displays line to line
voltage of 3 phases.
The 3rd screen : (Page 3) Displays phase
current of 3 phases.
Note : For 3 Ø 3 W system, only the 2nd and
3rd screen available
Energy selection
Factory
Setting
N
KEY
PRESS
7
NETWORK SELECTION AND WIRING INPUT
Range or
Selection
300, 600,1200,
2400, 4800,
9600 and19200
Note : For 3 Ø - 3 W system only the 11th and 12th
screen available.
ONLINE PAGE DESCRIPTION
Function
N
FRONT PANEL DESCRIPTION
Config
page.
Function
Password
Range or
Selection
Factory
Setting
0000 to 9998
10
No / Yes
No
1
Change Password
1.1
New Password
0000 to 9998
10
2
Network Selection
3P3W and 3P4W
3P4W
3
CT Secondary
1A or 5A
5
4
CT Primary
1A, 5A to
10,000A(10.0kA)
5
5
PT Secondary
100V to 500V
350
6
PT primary
100V to 10000V
350
16
Reset Energy
16.1
Password
16.2
Reset Active Energy
No / Yes
No
16.3
Reset Reactive Energy
No / Yes
No
16.4
Reset Apparent Energy
No / Yes
No
No / Yes
No
0001 to 9999
11
I1
S1
Marked parameters are available only in MFM383A-C.
For resetting energy parameters user will be prompted for
password. If correct password is entered, the user will be able
to reset all energy parameters. This password will be value
which will be greater than the configuration password by 1.
I3
I2
S2
S1
S2
S1
S2
N
V1
V2
V3
Pulse output from MFM383A meter can be used as
alarm generator or total energy controller by interfacing it
with Pre-settable counter and control circuits
(Contactors, Relay, Trip Circuit).
The counter is loaded with the maximum energy
consumption. When count reaches setpoint it provides
output to control circuit to take appropriate action.
Note : + and - on aux. supply is applicable only for 24V product
# All fuse types : 0.5A class CC UL type
0.5A fast acting 600V
Doc. name : OP INST MFM383A SERIES
OP623-V01(Page 2 of 4)
MODBUS REGISTER ADDRESSES LIST
Readable parameters from MFM383A-C : [ Length (Register) : 2 ; Data Structure : Float ]
MODBUS register addresses list continued
Address
Hex Address
Parameter
Address
Hex Address
Parameter
Readable / writable parameters from MFM383A-C :
30000
0x00
Voltage V1N
30034
0x22
kVA3
Address Hex Address
30002
0x02
Voltage V2N
30036
0x24
kVAr1
30004
0x04
Voltage V3N
30038
0x26
kVAr2
30006
0x06
Average Voltage LN
30040
0x28
kVAr3
30008
0x08
Voltage V12
30042
0x2A
Total kW
40009
0x09
Range
Parameter
Parity
Length
(Register)
Data
Structure
1
Integer
1
Integer
Value
Meaning
0x0000
None
0x0001
Odd
0x0002
Even
0x0000
1
0x0001
2
1
Set to factory setting range
1
Integer
1
Integer
30010
0x0A
Voltage V23
30044
0x2C
Total kVA
30012
0x0C
Voltage V31
30046
0x2E
Total kVAr
30014
0x0E
Average Voltage LL
30048
0x30
PF1
30016
0x10
Current I1
30050
0x32
PF2
40011
30018
0x12
Current I2
30052
0x34
PF3
40012
0x0C
Reset kWh
1
Reset Total Active Energy
30020
0x14
Current I3
30054
0x36
Average PF
40013
0x0D
Reset kVAh
1
Reset Total Apparent Energy
1
Integer
30022
0x16
Average Current
30056
0x38
Frequency
1
Reset Total Reactive Energy
1
Integer
30024
0x18
kW1
30058
0x3A
kWh
Min Value
Max Value
30026
0x1A
kW2
30060
0x3C
kVAh
30028
0x1C
kW3
30062
0x3E
kVArh
1
20
1
Integer
Page No
Meaning
30030
0x1E
kVA1
30032
0x20
kVA2
30064
0x40
40010
40014
40015
Serial Number
(Data Structure : Hex)
Readable / writable parameters :
Address Hex Address
40000
40001
0x00
0x01
Range
Parameter
Password
N/W selection
Min value
Max value
0
9998
Value
Meaning
Length
Data
(Register) Structure
0x0E
0x0F
Factory Default
Reset kVArh
Auto Mode Pages
40016
0x10
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40017
0x11
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40018
0x12
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40019
0x13
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40020
0x14
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40021
0x15
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40022
0x16
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
1- 20
1- First Page ; 20-Last Page
1
Integer
Integer
40023
0x17
Page Address Sequence
40024
0x18
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40025
0x19
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
0x1A
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
0
3P-4W
1
1
3P-3W
1
Integer
Max Value
0x0B
Stop bit
1
Integer
Min Value
0x0A
40002
0x02
CT Secondary
1
5
1
Integer
40026
40003
0x03
CT primary (CT Secondary = 5)
5
10000
1
Integer
40027
0x1B
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
CT primary (CT Secondary = 1)
1
10000
40028
0x1C
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40004
0x04
PT Secondary
100
500
1
Integer
40029
0x1D
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40005
0x05
PT primary
100
10000
2
Integer
40030
0x1E
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40007
0x07
Slave Id
1
255
1
Integer
Value
Meaning (bps)
0x0000
300
40008
0x08
Baud rate
1
Integer
40031
0x1F
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40032
0x20
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
40033
0x21
Page Address Sequence
1- 20
1- First Page ; 20-Last Page
1
Integer
1- 20
1- First Page ; 20-Last Page
1
Integer
1- 20
1- First Page ; 20-Last Page
1
Integer
0x0001
600
40034
0x22
Page Address Sequence
0x0002
1200
40035
0x23
Page Address Sequence
0x0003
2400
0x0004
4800
0x0005
9600
0x0006
19200
40036
0x24
Backlight
40037
0x25
Energy Selection
Min Value
Max Value (Sec.)
0 (Always on)
7200
1
Integer
0
Active
1
Integer
1
All
1
Integer
Doc. name : OP INST MFM383A SERIES
OP623-V01(Page 3 of 4)
TYPICAL WIRING DIAGRAM
3 PHASE 3-WIRE
3 Ø - 4 WIRE, 3 CT’S
N
+
#
+
+
PULSE
O/P
N
L
+
RS485
I1
S1
S2
S1
S2
I1
N
V1
V2
S1
V3
+
RS485
S1 S2
S1
N
V1
V2
V3
S1
L3
L2
L2
L1
L1
LOAD
LINE
3 Ø - 3 WIRE, 2 CT’S and 2 PT’S
N
N
N
V1
S1
I3
I2
S2
S1
S2
S1
S2
N
V1
V2
V3
#
+
+
RS485
# All fuse types : 0.5A class CC UL type
0.5A fast acting 600V
L
#
+
+
+
PULSE
O/P
L
L1
LOAD
LINE
2 Ø - 3 WIRE, 2 CT’S and 2 PT’S
+
+
PULSE
O/P
N
L
N
L1
LOAD
N
#
+
RS485
V3
V2
LINE
L
+
+
PULSE
O/P
N
L
I1
S2
+
RS485
L2
N
L
+
PULSE
O/P
L
N
3 Ø - 4 WIRE, 3 CT’S and 3 PT’S
+
S1
+
MFM383A / MFM383A-C
I3
I2
S1 S2
S2
+
#
N
L3
LOAD
#
+
RS485
#
#
LINE
L
#
+
+
PULSE
O/P
L
I1
S2
+
MFM383A / MFM383A-C
I3
I2
S2
N
#
+
+
PULSE
O/P
1 Ø - 2 WIRE, 1 CT
L
MFM383A / MFM383A-C
I3
I2
S2
+
L
MFM383A / MFM383A-C
S1
N
L
N
#
1 PHASE - 2 WIRE
2 Ø - 3 WIRE, 2 CT’S
3 Ø - 3 WIRE, 2 CT’S
L
N
N
2 PHASE - 3 WIRE
N
3 PHASE 4-WIRE (COMMONLY USED)
CONNECTION DIAGRAM FOR COMMUNICATION
+
RS485
Master
MFM383A / MFM383A-C
I1
S1
S2
I1
I3
I2
S1 S2
MFM383A / MFM383A-C
S1
S2
N
V1
V2
S1
V3
I2
S2
S1 S2
MFM383A / MFM383A-C
I3
S1
I1
S2
N
V1
V2
V3
S1
#
#
S2
I2
S1 S2
I3
S1
S2
N
V1 V2
V3
RS485-RS232
Converter
Suggested terminating
resistor
(120 ohm, ¼ watt)
#
V
V
1
2
LOAD
A
2
3
2
3
PF
3
1
PF
3
1
Avg
LINE
1
2
A
2
3
Avg
kWh
N
V
1
2
A
PF
3
1
Avg
kWh
kWh
N
A/M VI
L3
L3
L2
L2
L2
L1
L1
L1
LINE
LOAD
LINE
VAF
P
PRG
E
A/M VI
VAF
P
PRG
E
A/M VI
VAF
P
PRG
E
Contact sales for PC based monitoring
software to communicate with the meters.
LOAD
(Specifications are subject to change, since development is a
continuous process.)
Selec Controls Pvt. Ltd., India
Factory Address :
EL-27/1, Electronic Zone, TTC Industrial Area, MIDC, Mahape,
Navi Mumbai - 400 710, INDIA.
Tel. No. : +91-22-41 418 419/430 | Fax No. : +91-22-28471733
Toll free : 1800 227 353 (BSNL/MTNL Subscribers only)
Website : www.selec.com | Email : sales@selec.com
Disclaimer : "This product is strictly for industrial use and for sale in non European countries only"
Doc. name : OP INST MFM383A SERIES
OP623-V01(Page 4 of 4)